Improvement in car-dumping apparatus



ZSheets-Sheet 2. J. L. MITCHELL. CAP. :DUMPING APPARATUS. No. 188,812.Patented March 27,1877.

"NITED STATE-s PATENT OFFICE.

JONAS L. MITCHELL, 'on NELsONviLLE, OHIO.

IMPROVEMENT IN 'c AR-DuMPmG APPARATUS.

.Specificationrforming of- Letters Patent No. 188,81 2., dated March 27,1677 application filed Y December 1d, 1876.

To all whom it mag/concern.-

Be it known that l, J oNAs L. MITCHELL, of Nelsonville, inv thecountyofAthens and State of Ohio, have invented ainew and useful Im provement inGar-Dumping Apparatus, which is fully set forth inthefollowingspecification and accompanying drawings.

The object of my invention is to `furnish a car-dumping apparatus -foruse at coal and other mines, whereby the cars, as they come loaded fromthe mine, may be rapidly dumped, the load discharging from the tiltedend of the car, which passes between the track-rails, the empty car anddumper righting itself, the car then passing forward, while anotherloaded car at once takes its place on the dumper.

Referring to the drawings, Figure 1, first sheet, is a perspectiveviewof my car-dumping apparatus. Fig. 2, same sheet, is a view of theparts that operate the track-adjusting levers. Fig.3, second sheet, is aperspective view ofthe dumper tilted. Fig. 4, same sheet, is a plan viewof the parts that operate the adjustable car-stops.

The track-rails m m are pivoted and supported on the shaft or axle D,which also supports the entire dumping portion of the apparatus. Thetrack-rails are connected at either end by the bars O and T. Theadjustable'portions of the track B B are moved laterally by the leverson each side C C, which are pivoted at the clevises U U, the latterbeing secured to the frame-Work. In moving, these 'levers rest on theplates or slides c c. The track-adjusting levers are operated by therods w x w w, passing under the track-rails and connecting with thedouble varm orleyers p p. (Shown in Fig. 2.) This double arm is pivotedon a short shaft working in box 2, and has attached a crank, r, on thepin of which is a frictionroller, that works in the slot s of the piecesecured to the cross-bar O O. A rope, V, is

also attached to this cross-bar, and then passes twice around the drumE, (see Fig. 1,) and the end may be attached to the balance-weight N,though in the present example the rope passes over a pulley-wheel in theweight, the end be- Ying secured to the frame above. v

The mechanism for regulating the tip or descent of the dumper (seeFig.2 1) consists of the rope V, drum E, and brake-wheel F, both the latteron the shaft G. The handlever H of the brake is pivoted below the floorofthe frame, (not shown in the drawing,) and also below the door, andattached to the lever in a suitable manner, are the two ends of a metal-'lic frictionband, b, which passes entirely around the brake-wheel F. Bypushing forward the hand-lever H the friction-band b is drawn tightlyover the brake-wheel, and this prevents or checks the descent of thedump. The carstops A A, with the bell-crankparts A' A', (see Fig. 4,)are pivoted to the under side of rails. m m, and are connected by therods e e to the roller @I of the oscillating frame J J K. (Shown inFigs. l, 3, and 4.) The ends of the roller Or axle K are journaled andwork in bearings attached to the rails, one of which is shown at n. Aspring, ff, is secured by a clip, y, to the cross-bar g, which connectsthe two rods or carriers h h. The ends of the spring bear against theaxle D, and serve to keep the car-stops close to the track-rails. Thecarriers h h are pivoted to the uprights J J, and slide through bearingsin the axle D. To the inner side of one of the track-rails is a treadle,L, pivoted at one end, and attached at the other to an arm or crankwhich connects with the roller or axle K. The depression of this treadlecauses the oscillating frame to move forward, whereby the car-stops areopened Or spread away from the track-rail, as shown in Fig. 4. W is across-tie of the permanenttrack rail.

To operate my improved car-dump, a loaded car is run on until the frontwheels meet the stops A A. The hand-lever H of the brake meantime beingpushed forward, by releasing the brake slightly the dumping part tilts,the B B part of the track spreads, permitting the forward end of the carto go down between the tracks, the load discharging through the hingedend-gate. The weight N then brings the dump with empty car back toposition. The brake is again applied, and the next loaded car is runforward until the ange of the front wheel depresses the treadle L, whichspreads the car-stops, and the empty car at once passes forward on thepermanent track, the car-stops closing again when the rear wheel haspassed the treadle.

It will be seen from the foregoing that any number of loaded cars can bedumped in quick succession and with but little manual labor, theapparatus being in large part automatic in its operation.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is

1. The adjustable portions of track-rail B B, levers O C, rods x w w,double arm p p, pivoted, and crank r, all arranged and operatingsubstantially as described.

2. The adjustable portions of track B B, levers C C, rnds a' a: w m,double arm p p, crank 'r, arranged as described, in combination withslotted pieces, secured to the dumpingtrack, as shown and described.

3. In a car-dumping apparatus, the supporting shaft or axle D,track-rails m m, having suitable car-stops attached to the down-tiltingend, in combination with the rope V, passing around the drum E on shaftG and attached to weight N, and a hand-brake lever, suitably arrangedrelative to the friction-brake wheel F, for the purpose of regulatingthe descent of the dump.

4. The brake mechanism for regulating the tip of the track-rails of acar-dumping apparatus, consisting of the rope V, drum E, brakewheel F,shaft G, hand-lever H, and frictionband b, arranged substantially asdescribed.

5. In a car-dumping apparatus, the adj astable car-stops A A, pivoted tothe track-rails, with the bell-crank parts A A' connected by rods e e toan oscillating or sliding frame arranged between the track-rails, and towhich a spring is attached in such a way as to keep the car-stops closedto the track-rails.

6. In a car-dumping apparatus, the adj ustable car-stops A A, pivoted tothe track-rails, and connected, as shown and described, to anoscillating or sliding frame arranged between the tracks, in combinationwith the treadle L, pivoted at one end to the inner Side of thetrack-rail, and connected at the other end by suitable means to saidmovable frame, whereby, when the ange of the car-wheel depresses thetreadle, the car-stops A A are spread away from the track. v

J. L. MITCHELL. Witnesses:

E. SWAOKHAMEB, R. R. PATTERSON.

